Thermohalochromism of phenolate dyes conjugated with nitro-substituted aryl groups

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• 作者：Laura Hermosilla^a ; Marcos Caroli Rezende^a ; ^{marcos.caroli@usach.cl} ; Vanderlei Gageiro Machado^b ; Rafaela I. Stock^b
• 关键词：Thermohalochromism ; Cationic halochromism ; Conjugated polynitroaryl phenolate dyes
• 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：173
• 期：Complete
• 页码：556-561
• 全文大小：650 K
• 卷排序：173

文摘

Temperature affects the interaction of a halochromic dye with salts in solution. This thermohalochromic behavior was studied for a family of nitroaryl phenolate dyes. Their thermohalochromism was investigated in various solutions of organic and inorganic cations. Plots of halochromic shifts vs. cation concentration yielded apparent dye-cation association constants (K). Variations of K in each solvent reflected the effect of temperature on the solvated dye-cation pair.